I agree with Matt. Find a partner to put in the remaining $10,000 (plus whatever carrying costs you need). Structure the deal so that the first $10,000 in profits goes to the investor; then he gets a percentage (whatever the two of you negotiate--probably somewhere between 25% and 50%) of the remaining profit.

Hey Dave,
You can market it "as is" but you might also be able to find a partner to kick in the other 10k.
If you really have a great value, someone will want to invest with you.
You'll both make more money by selling a home that is completed.